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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

Hi all.
I have just installed Kubuntu 5.10 and have a problem making a SSH tunnel to my university server. On my other machine running slackware 10.2 i have no problem at all.
I use the command: ssh -D portnr(usually 1080) serveraddress
Does anyone have an idea about what might be the problem?

This is just a guess, but I'd bet that the university has done something to disable SSH tunnels. If this server has mutliple users accessing it, allowing them to hijack ports via SSH tunnels would be a nightmare. Probably the quickest way to get an answer would be to call the university IT group and see if they have done something to prevent SSH tunnels.

This is just a guess, but I'd bet that the university has done something to disable SSH tunnels. If this server has mutliple users accessing it, allowing them to hijack ports via SSH tunnels would be a nightmare. Probably the quickest way to get an answer would be to call the university IT group and see if they have done something to prevent SSH tunnels.

Hi and thanks. Been here a while just didnt have the need to write any new posts until now
Unfortunately thats not the problem - my other pc has no problem making a tunnel, neither has any of the people in my project-group

I did a little googling, and it seems that the most likely explanation is that your Kubuntu machine may not have a loopback device enabled. Apparently ssh needs a loopback device in order to make this work.

And since every other machine you've got works, it really should be something about the Kubuntu machine.

Originally posted by Hangdog42 I did a little googling, and it seems that the most likely explanation is that your Kubuntu machine may not have a loopback device enabled. Apparently ssh needs a loopback device in order to make this work.

And since every other machine you've got works, it really should be something about the Kubuntu machine.